Person-days or person-hours are proportional to work done

CAT has tested this idea 5 times across 5 papers, from 2020 to 2025. Solve one, and the others are the same method with different numbers or wording, which is why repeated concepts are the most efficient thing to practise.

Question	What it asks	Answer
CAT 2022 Slot 3 · QA Q16	N people, hours per day and days for 35%, then 10 leave	B
CAT 2020 Slot 3 · QA Q4	road partly built; extra workers needed to finish on time	40
CAT 2024 Slot 1 · QA Q5	days and hours per day differ for each worker	6
CAT 2022 Slot 2 · QA Q2	time ratios, hours per day; remaining job by third worker	6
CAT 2025 Slot 3 · QA Q10	teams with members of equal productivity; replacements needed	A

Part of Time & Work (34 questions since 2017).